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Acoustic insulation ratings have been obtained from a review of technical information, bulletins and reports issued by the respected organizations detailed within the references section of this technical information sheet. A series of acoustic floor types have been included, all of which meet or exceed the requirements of the NZBC stated in section (1) above. The specific floors are based on test data and / or “Robust Details” which have demonstrated, by testing, the acoustic insulation requirements. Where carpets have been utilized improvements in sound insulation have been based on published values by ‘The Carpet and Rug Institute’ (ref 7) and where vinyl has been incorporated, values of improvements are based on stated performance improvements by the manufacturer ‘Tarkett’ (ref10).
It is to be noted that for any floor, where the sound insulation incorporates the use of soft floor coverings fixed directly to the concrete floor, it relies on the floor finish remaining permanently in place to maintain acoustic performance. In this respect a quality assurance schedule must be implemented for all floor coverings.
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2.0 factors affecting airbourne sound insulation performance
3.0 factors affecting impact sound insulation performance
4.0 acoustic performance of composite floors
5.0 airbourne (stc) and impact (iic) ratings of floors incorporating 105mm thick unifloor
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